Vise-operator



UNITED STATES PATENT orifice.

LESLIE SLTER, OF VALLEJO, CALIFORNIA.

visa-OPERATOR. f

The present invention relates to anim-V provement on the common bench vise and its objectis to provide a power attachment which is easy to install on thebench vise now incominonuserand enables the operator to open and close the gap between the jaws by bearing down on a lever with Veither the ltoe or the heel of hisfoot.'

The advantages of such as attachment are obvious. Where the object to` be inserted between the jaws is heavy, the operator often iindsit difficult to hold the `object with one handy while usingthe other hand for turn.- ing the lever which ,closes the jaws against the object. yTith 4my attachment he may conveniently hold the yobject with `both hands and press down `on the lever "with his foot which will setthe traveling jaw in motion and cause the same vto either close in on.theiobjectgorto releasel ythe same. l/Vhere small objects are to be handled in large quantities, my attachment will enable the operator to use both hands for the insertion and removal. of the objects, thus saving a large number of motions and interruptions which are at present required for opening and closing the vise by hand and for laying down and taking up tools.

I attain these objects by the mechanism illustrated in the accompanying drawing, in

which- Figure l is a side elevation, partly shown in section, of a bench vise as now in common use.

Fig. 2V is a side elevation, partly shown in section, of a bench vise with my attachment fastened to it.

Fig. 3 is a rear view of the attachment.

Fig. 4 is a detail view of a modification of the drive shaft.

Similar numerals refer to similar parts` throughout the several views.

1 is a bench vise-ofthe type now in common use, consisting principallycf the stationary j aw 2 and the traveling Jaw 3. 'lhe stationary jaw 2 rests on the base 4, which is bolted to the top of the bench 6, as shown at 7, and is provided with a rectangular,

horizontal hole 8, into which lits slidably the Application aieanecembei is, le20.V serial No. iedere.'

' traveling jaw,

Speci'caton of Letters l-Patent.V Pgatentgd. 001;, '18, .1921- rectangular extension 9 of thetravelingvjaw 8. Extension 9 ishollow and open at the bottom so as to clear the nut 11 which is inserted in a groove 12l of the stationaryjaw and firmly held 4in its place by apin 14. .In the nut turns the screw 16, yprovided at lits y,outer end with a hand lever 17 and mounted in a bearing in the outer wall 18 of the traveling jaw`3. A collar 19 'on said in the outer' wall lSand onthe ,otherA side against a guard 2l, forces the traveling jaw to followvth'emotions of the screw 16.

To'attach myV deviceto thisv viselI remove screw, bearing on one side against a recess Y` the hand lever 17key the screw 16 to the as shown at 22, and take the nut r1.1 o ut of its groovein thefstatioiiary 'Ithen rigidly fasten to the-rear end'23 of thestationary jaw 2 the housing 24, as shown r'bat 26. 4The housing yextends backward far Venough to allow thevise to be closedwith-A out 'the extension 9fc`oming in Vcontact with the back' wall27`oflthe housing; In theback wall 27 rotatably mounted, in bearings 28and c'o-aXially with thegs'c'rew. 16the shaft 429, prevented'from sliding ,in itsbeariii'` v `two collars31and32." Thepart 33 nl .said shaft,eXtendinginwardly, is hollow and ythreaded on the inside; sok as to.. be adapted to engage the screw 16 and to work said screw, and with itcthe traveling backward and forward. Rotary motion may be imparted to the shaft 29 in any `known manner. I consider larly useful equipped with my invention particuin those shops' which are compressed air and for that reason have selected, for the purposes 'of' this illustration, an air motor 31 as the driving power. The latter drives the shaft 29 by means of a worin inounted on shaft 33 engaging' the worm gear 34 mounted oii said shaft 29. The air motor is controlled l by a lever 36, pivcted centrally, the twov arms of which are connected with rods 37 and 38. A pull on rod 37 revolvesthe shaft 29 in one direction and a pull on rod 38 revolves it in the opposite direction. Each of the free ends of the rods 37 and 88 is fastened to one of the arms 41 and 42 of av lever 43, centrally pivoted on the standard 44 secured to the base plate 46, which latter plate is screwed to the floor in a place within convenient reach of the foot of the op erator. Each arm of the lever 43 is supported by an expansion spring '47 also resting on the base plate 46.` These two springs to move in one whiohl48 signifies a circular saw, 49 ai verlator, may y tools such as anemery wheel, a buiiing normally keep the lever 43 in a horizontal` position, and in this position the air supply to the air motor is shutoff. `When the operator presses down with his foot on arm 4l Yof the lever 43, the rod 37 pulls on one'arm of the lever 36, thereby Asupplyingair to theair motor direction, say, toward the stationary jaw 2; and vice versa a pressing down'on arm 42 of the lever causes jaw 3 to move' in theopposite direction, that is, away from the stationaryja'w.

' t can he easily seen that similar arrangements forthe movingV forward Aand backward ofthe traveling jaw can loemadefor.

any other power which may loe at the disposal of the operator and for belt oonnec-V tionsto a mainshaft.

" Afurther advantage of a power attachment asf above described is that an extension ofthe shaft 33, which is, under normal Aconditions, within handyreachofthe opi be used as'jshaft fonrotating wheel or circular saw,"a`s.shown in Fig. 3, in

fing wheel and 51l an emery Wheel; a drill 5G may be insertedinto the end'of the shaft.

I realize that the greatest amount of power will be needed atthe instant' when thejaws are to he separated, that is, ,at the 'timewhen I the ltraveling Jawl is tof start on'its hackward travehl u whenthe-supplied power is `the least effec- Since this isthe very time tive, it may 1 oe found that the power is not suiiicient toseparate the jaws. To overcome this difficulty the shaft 33 may V`,be separated and cansino the travelin(T faw' "spring" balanced come the initial resistance of thejawstov their separation. e Y y v I claim: i

1. A vise, comprising a stationary jaw, a-

traveling jaw slidahly mounted'therein, a screwy rigidly secured in said travelingjaw,

af shaft .mounted in saidv stationary JawV `alined vwith lsaid screwhaving a threaded sleeve adapted to engage said serew, means for rotating said shaft so'as to yslidalolymove said traveling jaw in said sttfomy, law

and a spring balanoedfoot lever adapted, to

control said means;

'2; A'vise, comprising a stationaryv jaw, ay

traveling jaw mounted therein, VaV screw rigidlysecuredin saidl traveling jaw, a housing rigidly fastened .to said stationaryv Jawya with said "screw havingy a threaded .sleeve adapted tov engage said screw, means for rotating saidV shaft so as to slidahly move said traveling Vjaw in said stationary jawfand a y ,foot lever adapted to oontrol said means. f Y "V i nLlllSlillSALTER.V

.shaft mounted in said stationaryjawv alined Y l Y 

